gtk2_ardour/midi_region_view.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include <cmath>
  21 #include <cassert>
  22 #include <algorithm>
  23
  24 #include <gtkmm.h>
  25
  26 #include <gtkmm2ext/gtk_ui.h>
  27
  28 #include <sigc++/signal.h>
  29
  30 #include <ardour/playlist.h>
  31 #include <ardour/tempo.h>
  32 #include <ardour/midi_region.h>
  33 #include <ardour/midi_source.h>
  34 #include <ardour/midi_diskstream.h>
  35 #include <ardour/midi_model.h>
  36
  37 #include "streamview.h"
  38 #include "midi_region_view.h"
  39 #include "midi_streamview.h"
  40 #include "midi_time_axis.h"
  41 #include "simpleline.h"
  42 #include "canvas-hit.h"
  43 #include "canvas-note.h"
  44 #include "canvas-program-change.h"
  45 #include "public_editor.h"
  46 #include "ghostregion.h"
  47 #include "midi_time_axis.h"
  48 #include "automation_time_axis.h"
  49 #include "automation_region_view.h"
  50 #include "utils.h"
  51 #include "midi_util.h"
  52 #include "gui_thread.h"
  53 #include "keyboard.h"
  54
  55 #include "i18n.h"
  56
  57 using namespace sigc;
  58 using namespace ARDOUR;
  59 using namespace PBD;
  60 using namespace Editing;
  61 using namespace ArdourCanvas;
  62
  63 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color)
  64         : RegionView (parent, tv, r, spu, basic_color)
  65         , force_channel(-1)
  66         , last_channel_selection(0xFFFF)
  67         , _default_note_length(0.0)
  68         , _active_notes(0)
  69         , _note_group(new ArdourCanvas::Group(*parent))
  70         , _delta_command(NULL)
  71         , _mouse_state(None)
  72         , _pressed_button(0)
  73 {
  74         group->lower_to_bottom();
  75         _note_group->raise_to_top();
  76
  77         frame->property_fill_color_rgba() = 0xff000033;
  78 }
  79
  80 MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &tv, boost::shared_ptr<MidiRegion> r, double spu, Gdk::Color& basic_color, TimeAxisViewItem::Visibility visibility)
  81         : RegionView (parent, tv, r, spu, basic_color, visibility)
  82         , force_channel(-1)
  83         , last_channel_selection(0xFFFF)
  84         , _default_note_length(0.0)
  85         , _active_notes(0)
  86         , _note_group(new ArdourCanvas::Group(*parent))
  87         , _delta_command(NULL)
  88         , _mouse_state(None)
  89         , _pressed_button(0)
  90
  91 {
  92         _note_group->raise_to_top();
  93 }
  94
  95 void
  96 MidiRegionView::init (Gdk::Color& basic_color, bool wfd)
  97 {
  98         if (wfd)
  99                 midi_region()->midi_source(0)->load_model();
 100
 101         const Meter& m = trackview.session().tempo_map().meter_at(_region->position());
 102         const Tempo& t = trackview.session().tempo_map().tempo_at(_region->position());
 103         _default_note_length = m.frames_per_bar(t, trackview.session().frame_rate())
 104                         / m.beats_per_bar();
 105
 106         _model = midi_region()->midi_source(0)->model();
 107         _enable_display = false;
 108
 109         RegionView::init(basic_color, false);
 110
 111         compute_colors (basic_color);
 112
 113         reset_width_dependent_items ((double) _region->length() / samples_per_unit);
 114
 115         set_y_position_and_height (0, trackview.height);
 116
 117         region_muted ();
 118         region_resized (BoundsChanged);
 119         region_locked ();
 120
 121         _region->StateChanged.connect (mem_fun(*this, &MidiRegionView::region_changed));
 122
 123         set_colors ();
 124
 125         _enable_display = true;
 126
 127         if (_model) {
 128                 if (wfd) {
 129                         redisplay_model();
 130                 }
 131                 _model->ContentsChanged.connect(sigc::mem_fun(this, &MidiRegionView::redisplay_model));
 132         }
 133
 134         midi_region()->midi_source(0)->Switched.connect(sigc::mem_fun(this, &MidiRegionView::switch_source));
 135
 136         group->signal_event().connect (mem_fun (this, &MidiRegionView::canvas_event), false);
 137
 138         midi_view()->signal_force_channel_changed().connect(
 139                         mem_fun(this, &MidiRegionView::midi_force_channel_changed));
 140         midi_view()->signal_channel_selection_changed().connect(
 141                         mem_fun(this, &MidiRegionView::midi_channel_selection_changed));
 142 }
 143
 144 bool
 145 MidiRegionView::canvas_event(GdkEvent* ev)
 146 {
 147         static bool delete_mod = false;
 148         static Editing::MidiEditMode original_mode;
 149
 150         static double drag_start_x, drag_start_y;
 151         static double last_x, last_y;
 152         double event_x, event_y;
 153         nframes_t event_frame = 0;
 154
 155         static ArdourCanvas::SimpleRect* drag_rect = NULL;
 156
 157         if (trackview.editor.current_mouse_mode() != MouseNote)
 158                 return false;
 159
 160         // Mmmm, spaghetti
 161
 162         switch (ev->type) {
 163         case GDK_KEY_PRESS:
 164                 if (ev->key.keyval == GDK_Delete && !delete_mod) {
 165                         delete_mod = true;
 166                         original_mode = trackview.editor.current_midi_edit_mode();
 167                         trackview.editor.set_midi_edit_mode(MidiEditErase);
 168                         start_delta_command(_("erase notes"));
 169                         _mouse_state = EraseTouchDragging;
 170                         return true;
 171                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 172                         _mouse_state = SelectTouchDragging;
 173                         return true;
 174                 } else if (ev->key.keyval == GDK_Escape) {
 175                         clear_selection();
 176                         _mouse_state = None;
 177                 }
 178                 return false;
 179
 180         case GDK_KEY_RELEASE:
 181                 if (ev->key.keyval == GDK_Delete) {
 182                         if (_mouse_state == EraseTouchDragging) {
 183                                 delete_selection();
 184                                 apply_command();
 185                         }
 186                         if (delete_mod) {
 187                                 trackview.editor.set_midi_edit_mode(original_mode);
 188                                 _mouse_state = None;
 189                                 delete_mod = false;
 190                         }
 191                         return true;
 192                 } else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
 193                         _mouse_state = None;
 194                         return true;
 195                 }
 196                 return false;
 197
 198         case GDK_BUTTON_PRESS:
 199                 if (_mouse_state != SelectTouchDragging &&
 200                         _mouse_state != EraseTouchDragging &&
 201                         ev->button.button == 1  ) {
 202                         _pressed_button = ev->button.button;
 203                         _mouse_state = Pressed;
 204                         return true;
 205                 }
 206                 _pressed_button = ev->button.button;
 207                 return false;
 208
 209         case GDK_ENTER_NOTIFY:
 210                 /* FIXME: do this on switch to note tool, too, if the pointer is already in */
 211                 Keyboard::magic_widget_grab_focus();
 212                 group->grab_focus();
 213                 break;
 214
 215         case GDK_MOTION_NOTIFY:
 216                 event_x = ev->motion.x;
 217                 event_y = ev->motion.y;
 218                 group->w2i(event_x, event_y);
 219
 220                 // convert event_x to global frame
 221                 event_frame = trackview.editor.pixel_to_frame(event_x) + _region->position();
 222                 trackview.editor.snap_to(event_frame);
 223                 // convert event_frame back to local coordinates relative to position
 224                 event_frame -= _region->position();
 225
 226                 switch (_mouse_state) {
 227                 case Pressed: // Drag start
 228
 229                         // Select drag start
 230                         if (_pressed_button == 1 && trackview.editor.current_midi_edit_mode() == MidiEditSelect) {
 231                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 232                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 233                                 last_x = event_x;
 234                                 last_y = event_y;
 235                                 drag_start_x = event_x;
 236                                 drag_start_y = event_y;
 237
 238                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 239                                 drag_rect->property_x1() = event_x;
 240                                 drag_rect->property_y1() = event_y;
 241                                 drag_rect->property_x2() = event_x;
 242                                 drag_rect->property_y2() = event_y;
 243                                 drag_rect->property_outline_what() = 0xFF;
 244                                 drag_rect->property_outline_color_rgba()
 245                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectOutline.get();
 246                                 drag_rect->property_fill_color_rgba()
 247                                         = ARDOUR_UI::config()->canvasvar_MidiSelectRectFill.get();
 248
 249                                 _mouse_state = SelectRectDragging;
 250                                 return true;
 251
 252                         // Add note drag start
 253                         } else if (trackview.editor.current_midi_edit_mode() == MidiEditPencil) {
 254                                 group->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
 255                                                 Gdk::Cursor(Gdk::FLEUR), ev->motion.time);
 256                                 last_x = event_x;
 257                                 last_y = event_y;
 258                                 drag_start_x = event_x;
 259                                 drag_start_y = event_y;
 260
 261                                 drag_rect = new ArdourCanvas::SimpleRect(*group);
 262                                 drag_rect->property_x1() = trackview.editor.frame_to_pixel(event_frame);
 263
 264                                 drag_rect->property_y1() = midi_stream_view()->note_to_y(midi_stream_view()->y_to_note(event_y));
 265                                 drag_rect->property_x2() = event_x;
 266                                 drag_rect->property_y2() = drag_rect->property_y1() + floor(midi_stream_view()->note_height());
 267                                 drag_rect->property_outline_what() = 0xFF;
 268                                 drag_rect->property_outline_color_rgba() = 0xFFFFFF99;
 269
 270                                 drag_rect->property_fill_color_rgba() = 0xFFFFFF66;
 271
 272                                 _mouse_state = AddDragging;
 273                                 return true;
 274                         }
 275
 276                         return false;
 277
 278                 case SelectRectDragging: // Select drag motion
 279                 case AddDragging: // Add note drag motion
 280                         if (ev->motion.is_hint) {
 281                                 int t_x;
 282                                 int t_y;
 283                                 GdkModifierType state;
 284                                 gdk_window_get_pointer(ev->motion.window, &t_x, &t_y, &state);
 285                                 event_x = t_x;
 286                                 event_y = t_y;
 287                         }
 288
 289                         if (_mouse_state == AddDragging)
 290                                 event_x = trackview.editor.frame_to_pixel(event_frame);
 291
 292                         if (drag_rect)
 293                                 if (event_x > drag_start_x)
 294                                         drag_rect->property_x2() = event_x;
 295                                 else
 296                                         drag_rect->property_x1() = event_x;
 297
 298                         if (drag_rect && _mouse_state == SelectRectDragging) {
 299                                 if (event_y > drag_start_y)
 300                                         drag_rect->property_y2() = event_y;
 301                                 else
 302                                         drag_rect->property_y1() = event_y;
 303
 304                                 update_drag_selection(drag_start_x, event_x, drag_start_y, event_y);
 305                         }
 306
 307                         last_x = event_x;
 308                         last_y = event_y;
 309
 310                 case EraseTouchDragging:
 311                 case SelectTouchDragging:
 312                         return false;
 313
 314                 default:
 315                         break;
 316                 }
 317                 break;
 318
 319         case GDK_BUTTON_RELEASE:
 320                 event_x = ev->motion.x;
 321                 event_y = ev->motion.y;
 322                 group->w2i(event_x, event_y);
 323                 group->ungrab(ev->button.time);
 324                 event_frame = trackview.editor.pixel_to_frame(event_x);
 325
 326                 if(_pressed_button != 1) {
 327                         return false;
 328                 }
 329
 330                 switch (_mouse_state) {
 331                 case Pressed: // Clicked
 332                         switch (trackview.editor.current_midi_edit_mode()) {
 333                         case MidiEditSelect:
 334                         case MidiEditResize:
 335                                 clear_selection();
 336                                 break;
 337                         case MidiEditPencil:
 338                                 create_note_at(event_x, event_y, _default_note_length);
 339                         default:
 340                                 break;
 341                         }
 342                         _mouse_state = None;
 343                         return true;
 344                 case SelectRectDragging: // Select drag done
 345                         _mouse_state = None;
 346                         delete drag_rect;
 347                         drag_rect = NULL;
 348                         return true;
 349                 case AddDragging: // Add drag done
 350                         _mouse_state = None;
 351                         if (drag_rect->property_x2() > drag_rect->property_x1() + 2) {
 352                                 const double x      = drag_rect->property_x1();
 353                                 const double length = trackview.editor.pixel_to_frame(
 354                                                         drag_rect->property_x2() - drag_rect->property_x1());
 355
 356                                 create_note_at(x, drag_rect->property_y1(), length);
 357                         }
 358
 359                         delete drag_rect;
 360                         drag_rect = NULL;
 361                         return true;
 362                 default:
 363                         break;
 364                 }
 365
 366         default:
 367                 break;
 368         }
 369
 370         return false;
 371 }
 372
 373
 374 /** Add a note to the model, and the view, at a canvas (click) coordinate */
 375 void
 376 MidiRegionView::create_note_at(double x, double y, double duration)
 377 {
 378         MidiTimeAxisView* const mtv = dynamic_cast<MidiTimeAxisView*>(&trackview);
 379         MidiStreamView* const view = mtv->midi_view();
 380
 381         double note = midi_stream_view()->y_to_note(y);
 382
 383         assert(note >= 0.0);
 384         assert(note <= 127.0);
 385
 386         nframes_t new_note_time = trackview.editor.pixel_to_frame (x);
 387         assert(new_note_time >= 0);
 388         new_note_time += _region->start();
 389
 390         /*
 391         const Meter& m = trackview.session().tempo_map().meter_at(new_note_time);
 392         const Tempo& t = trackview.session().tempo_map().tempo_at(new_note_time);
 393         double duration = m.frames_per_bar(t, trackview.session().frame_rate()) / m.beats_per_bar();
 394         */
 395
 396         // we need to snap here again in nframes_t in order to be sample accurate
 397         // since note time is region-absolute but snap_to_frame expects position-relative
 398         // time we have to coordinate transform back and forth here.
 399         nframes_t new_note_time_position_relative = new_note_time      - _region->start();
 400         new_note_time = snap_to_frame(new_note_time_position_relative) + _region->start();
 401
 402         // we need to snap the duration too to be sample accurate
 403         nframes_t new_note_duration = nframes_t(duration);
 404         new_note_duration = snap_to_frame(new_note_time_position_relative + new_note_duration) + _region->start()
 405                             - new_note_time;
 406
 407         const boost::shared_ptr<Note> new_note(new Note(0, new_note_time, new_note_duration, (uint8_t)note, 0x40));
 408         view->update_bounds(new_note->note());
 409
 410         MidiModel::DeltaCommand* cmd = _model->new_delta_command("add note");
 411         cmd->add(new_note);
 412         _model->apply_command(cmd);
 413
 414         //add_note(new_note);
 415 }
 416
 417
 418 void
 419 MidiRegionView::clear_events()
 420 {
 421         clear_selection();
 422
 423         MidiGhostRegion* gr;
 424         for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 425                 if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 426                         gr->clear_events();
 427                 }
 428         }
 429
 430         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i)
 431                 delete *i;
 432
 433         _events.clear();
 434         _pgm_changes.clear();
 435 }
 436
 437
 438 void
 439 MidiRegionView::display_model(boost::shared_ptr<MidiModel> model)
 440 {
 441         _model = model;
 442
 443         if (_enable_display)
 444                 redisplay_model();
 445 }
 446
 447
 448 void
 449 MidiRegionView::redisplay_model()
 450 {
 451         // Don't redisplay the model if we're currently recording and displaying that
 452         if (_active_notes)
 453                 return;
 454
 455         if (_model) {
 456
 457                 clear_events();
 458                 begin_write();
 459
 460                 _model->read_lock();
 461
 462                 /*
 463                 MidiModel::Notes notes = _model->notes();
 464                 cerr << endl << "Model contains " << notes.size() << " Notes:" << endl;
 465                 for(MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
 466                         Note note = *(*i).get();
 467                         cerr << "MODEL: Note time: " << note.time() << " duration: " << note.duration()
 468                              << "   end-time: " << note.end_time()
 469                              << "   velocity: " << int(note.velocity())
 470                              //<< " Note-on: " << note.on_event().
 471                              //<< " Note-off: " << note.off_event()
 472                              << endl;
 473                 }*/
 474
 475                 for (size_t i=0; i < _model->n_notes(); ++i) {
 476                         add_note(_model->note_at(i));
 477                 }
 478
 479                 MidiModel::PgmChanges& pgm_changes = _model->pgm_changes();
 480                 for_each(pgm_changes.begin(), pgm_changes.end(),
 481                         sigc::mem_fun(this, &MidiRegionView::add_pgm_change));
 482
 483                 end_write();
 484
 485                 /*for (Automatable::Controls::const_iterator i = _model->controls().begin();
 486                                 i != _model->controls().end(); ++i) {
 487
 488                         assert(i->second);
 489
 490                         boost::shared_ptr<AutomationTimeAxisView> at
 491                                 = midi_view()->automation_child(i->second->parameter());
 492                         if (!at)
 493                                 continue;
 494
 495                         Gdk::Color col = midi_stream_view()->get_region_color();
 496
 497                         boost::shared_ptr<AutomationRegionView> arv;
 498
 499                         {
 500                                 Glib::Mutex::Lock list_lock (i->second->list()->lock());
 501
 502                                 arv = boost::shared_ptr<AutomationRegionView>(
 503                                                 new AutomationRegionView(at->canvas_display,
 504                                                         *at.get(), _region, i->second->list(),
 505                                                         midi_stream_view()->get_samples_per_unit(), col));
 506                         }
 507
 508                         arv->set_duration(_region->length(), this);
 509                         arv->init(col, true);
 510
 511                         _automation_children.insert(std::make_pair(i->second->parameter(), arv));
 512                 }*/
 513
 514                 _model->read_unlock();
 515
 516         } else {
 517                 cerr << "MidiRegionView::redisplay_model called without a model" << endmsg;
 518         }
 519 }
 520
 521
 522 MidiRegionView::~MidiRegionView ()
 523 {
 524         in_destructor = true;
 525
 526         RegionViewGoingAway (this); /* EMIT_SIGNAL */
 527
 528         if (_active_notes)
 529                 end_write();
 530
 531         _selection.clear();
 532         clear_events();
 533         delete _note_group;
 534         delete _delta_command;
 535 }
 536
 537
 538 void
 539 MidiRegionView::region_resized (Change what_changed)
 540 {
 541         RegionView::region_resized(what_changed);
 542
 543         if (what_changed & ARDOUR::PositionChanged) {
 544                 if (_enable_display)
 545                         redisplay_model();
 546         }
 547 }
 548
 549 void
 550 MidiRegionView::reset_width_dependent_items (double pixel_width)
 551 {
 552         RegionView::reset_width_dependent_items(pixel_width);
 553         assert(_pixel_width == pixel_width);
 554
 555         if (_enable_display)
 556                 redisplay_model();
 557 }
 558
 559 void
 560 MidiRegionView::set_y_position_and_height (double y, double h)
 561 {
 562         RegionView::set_y_position_and_height(y, h - 1);
 563
 564         if (_enable_display) {
 565
 566                 _model->read_lock();
 567
 568                 for (std::vector<CanvasNoteEvent*>::const_iterator i = _events.begin(); i != _events.end(); ++i) {
 569                         CanvasNoteEvent* event = *i;
 570                         Item* item = dynamic_cast<Item*>(event);
 571                         assert(item);
 572                         if (event && event->note()) {
 573                                 if (event->note()->note() < midi_stream_view()->lowest_note() ||
 574                                    event->note()->note() > midi_stream_view()->highest_note()) {
 575
 576                                         if (canvas_item_visible(item)) {
 577                                                 item->hide();
 578                                         }
 579                                 } else {
 580                                         if (!canvas_item_visible(item)) {
 581                                                 item->show();
 582                                         }
 583
 584                                         event->hide_velocity();
 585                                         if(CanvasNote* note = dynamic_cast<CanvasNote*>(event)) {
 586                                                 const double y1 = midi_stream_view()->note_to_y(event->note()->note());
 587                                                 const double y2 = y1 + floor(midi_stream_view()->note_height());
 588
 589                                                 note->property_y1() = y1;
 590                                                 note->property_y2() = y2;
 591                                         }
 592                                         if(CanvasHit* hit = dynamic_cast<CanvasHit*>(event)) {
 593                                                 double x = trackview.editor.frame_to_pixel((nframes_t)
 594                                                                 event->note()->time() - _region->start());
 595                                                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 596                                                 double y = midi_stream_view()->note_to_y(event->note()->note())
 597                                                                  + ((diamond_size-2.0) / 4.0);
 598
 599                                                 hit->set_height(diamond_size);
 600                                                 hit->move(x-hit->x1(), y-hit->y1());
 601                                                 hit->show();
 602                                         }
 603                                         if(event->selected()) {
 604                                                 event->show_velocity();
 605                                         }
 606                                 }
 607                         }
 608                 }
 609
 610                 _model->read_unlock();
 611         }
 612
 613         if (name_text) {
 614                 name_text->raise_to_top();
 615         }
 616 }
 617
 618 GhostRegion*
 619 MidiRegionView::add_ghost (TimeAxisView& tv)
 620 {
 621         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(&trackview);
 622         CanvasNote* note;
 623         assert(rtv);
 624
 625         double unit_position = _region->position () / samples_per_unit;
 626         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(&tv);
 627         MidiGhostRegion* ghost;
 628
 629         if (mtv && mtv->midi_view()) {
 630                 /* if ghost is inserted into midi track, use a dedicated midi ghost canvas group.
 631                    this is because it's nice to have midi notes on top of the note lines and
 632                    audio waveforms under it.
 633                  */
 634                 ghost = new MidiGhostRegion (*mtv->midi_view(), trackview, unit_position);
 635         }
 636         else {
 637                 ghost = new MidiGhostRegion (tv, trackview, unit_position);
 638         }
 639
 640         ghost->set_height ();
 641         ghost->set_duration (_region->length() / samples_per_unit);
 642         ghosts.push_back (ghost);
 643
 644         for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 645                 if ((note = dynamic_cast<CanvasNote*>(*i)) != 0) {
 646                         ghost->add_note(note);
 647                 }
 648         }
 649
 650         ghost->GoingAway.connect (mem_fun(*this, &MidiRegionView::remove_ghost));
 651
 652         return ghost;
 653 }
 654
 655
 656 /** Begin tracking note state for successive calls to add_event
 657  */
 658 void
 659 MidiRegionView::begin_write()
 660 {
 661         assert(!_active_notes);
 662         _active_notes = new CanvasNote*[128];
 663         for (unsigned i=0; i < 128; ++i)
 664                 _active_notes[i] = NULL;
 665 }
 666
 667
 668 /** Destroy note state for add_event
 669  */
 670 void
 671 MidiRegionView::end_write()
 672 {
 673         delete[] _active_notes;
 674         _active_notes = NULL;
 675         _marked_for_selection.clear();
 676 }
 677
 678
 679 /** Resolve an active MIDI note (while recording).
 680  */
 681 void
 682 MidiRegionView::resolve_note(uint8_t note, double end_time)
 683 {
 684         if (midi_view()->note_mode() != Sustained)
 685                 return;
 686
 687         if (_active_notes && _active_notes[note]) {
 688                 _active_notes[note]->property_x2() = trackview.editor.frame_to_pixel((nframes_t)end_time);
 689                 _active_notes[note]->property_outline_what() = (guint32) 0xF; // all edges
 690                 _active_notes[note] = NULL;
 691         }
 692 }
 693
 694
 695 /** Extend active notes to rightmost edge of region (if length is changed)
 696  */
 697 void
 698 MidiRegionView::extend_active_notes()
 699 {
 700         if (!_active_notes)
 701                 return;
 702
 703         for (unsigned i=0; i < 128; ++i)
 704                 if (_active_notes[i])
 705                         _active_notes[i]->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 706 }
 707
 708
 709 /** Add a MIDI note to the view (with duration).
 710  *
 711  * If in sustained mode, notes with duration 0 will be considered active
 712  * notes, and resolve_note should be called when the corresponding note off
 713  * event arrives, to properly display the note.
 714  */
 715 void
 716 MidiRegionView::add_note(const boost::shared_ptr<Note> note)
 717 {
 718         assert(note->time() >= 0);
 719         assert(midi_view()->note_mode() == Sustained || midi_view()->note_mode() == Percussive);
 720
 721         // dont display notes beyond the region bounds
 722         if(
 723                         note->time() - _region->start() >= _region->length() ||
 724                         note->time() <  _region->start() ||
 725                         note->note() < midi_stream_view()->lowest_note() ||
 726                         note->note() > midi_stream_view()->highest_note()
 727           ) {
 728                 return;
 729         }
 730
 731         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 732
 733         CanvasNoteEvent *event = 0;
 734
 735         const double x = trackview.editor.frame_to_pixel((nframes_t)note->time() - _region->start());
 736
 737         if (midi_view()->note_mode() == Sustained) {
 738
 739                 //cerr << "MRV::add_note sustained " << note->note() << " @ " << note->time()
 740                 //      << " .. " << note->end_time() << endl;
 741
 742                 const double y1 = midi_stream_view()->note_to_y(note->note());
 743                 const double note_endpixel =
 744                         trackview.editor.frame_to_pixel((nframes_t)note->end_time() - _region->start());
 745
 746                 CanvasNote* ev_rect = new CanvasNote(*this, *group, note);
 747                 ev_rect->property_x1() = x;
 748                 ev_rect->property_y1() = y1;
 749                 if (note->duration() > 0)
 750                         ev_rect->property_x2() = note_endpixel;
 751                 else
 752                         ev_rect->property_x2() = trackview.editor.frame_to_pixel(_region->length());
 753                 ev_rect->property_y2() = y1 + floor(midi_stream_view()->note_height());
 754
 755                 if (note->duration() == 0) {
 756                         _active_notes[note->note()] = ev_rect;
 757                         /* outline all but right edge */
 758                         ev_rect->property_outline_what() = (guint32) (0x1 & 0x4 & 0x8);
 759                 } else {
 760                         /* outline all edges */
 761                         ev_rect->property_outline_what() = (guint32) 0xF;
 762                 }
 763
 764                 ev_rect->show();
 765                 _events.push_back(ev_rect);
 766                 event = ev_rect;
 767
 768                 MidiGhostRegion* gr;
 769
 770                 for (std::vector<GhostRegion*>::iterator g = ghosts.begin(); g != ghosts.end(); ++g) {
 771                         if ((gr = dynamic_cast<MidiGhostRegion*>(*g)) != 0) {
 772                                 gr->add_note(ev_rect);
 773                         }
 774                 }
 775
 776         } else if (midi_view()->note_mode() == Percussive) {
 777
 778                 //cerr << "MRV::add_note percussive " << note->note() << " @ " << note->time()
 779                 //      << " .. " << note->end_time() << endl;
 780
 781                 const double diamond_size = midi_stream_view()->note_height() / 2.0;
 782                 const double y = midi_stream_view()->note_to_y(note->note()) + ((diamond_size-2) / 4.0);
 783
 784                 CanvasHit* ev_diamond = new CanvasHit(*this, *group, diamond_size, note);
 785                 ev_diamond->move(x, y);
 786                 ev_diamond->show();
 787                 _events.push_back(ev_diamond);
 788                 event = ev_diamond;
 789         } else {
 790                 event = 0;
 791         }
 792
 793         if(event) {
 794                 if(_marked_for_selection.find(event->note()) != _marked_for_selection.end()) {
 795                                 note_selected(event, true);
 796                 }
 797                 event->on_channel_selection_change(last_channel_selection);
 798         }
 799 }
 800
 801 void
 802 MidiRegionView::add_pgm_change(boost::shared_ptr<MIDI::Event> event)
 803 {
 804         assert(event->time() >= 0);
 805
 806         // dont display notes beyond the region bounds
 807         if(
 808                         event->time() - _region->start() >= _region->length() ||
 809                         event->time() <  _region->start()
 810           ) {
 811                 return;
 812         }
 813
 814         ArdourCanvas::Group* const group = (ArdourCanvas::Group*)get_canvas_group();
 815         const double x = trackview.editor.frame_to_pixel((nframes_t)event->time() - _region->start());
 816
 817         double height = midi_stream_view()->contents_height();
 818         _pgm_changes.push_back(
 819                 boost::shared_ptr<CanvasProgramChange>(
 820                         new CanvasProgramChange(*this, *group, event, height, x, 1.0)));
 821 }
 822
 823 void
 824 MidiRegionView::delete_selection()
 825 {
 826         assert(_delta_command);
 827
 828         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 829                 if ((*i)->selected())
 830                         _delta_command->remove((*i)->note());
 831
 832         _selection.clear();
 833 }
 834
 835 void
 836 MidiRegionView::clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev)
 837 {
 838         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 839                 if ((*i)->selected() && (*i) != ev)
 840                         (*i)->selected(false);
 841
 842         _selection.clear();
 843 }
 844
 845 void
 846 MidiRegionView::unique_select(ArdourCanvas::CanvasNoteEvent* ev)
 847 {
 848         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 849                 if ((*i) != ev)
 850                         (*i)->selected(false);
 851
 852         _selection.clear();
 853         _selection.insert(ev);
 854
 855         if ( ! ev->selected())
 856                 ev->selected(true);
 857 }
 858
 859 void
 860 MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 861 {
 862         if ( ! add)
 863                 clear_selection_except(ev);
 864
 865         _selection.insert(ev);
 866
 867         if ( ! ev->selected())
 868                 ev->selected(true);
 869 }
 870
 871
 872 void
 873 MidiRegionView::note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add)
 874 {
 875         if ( ! add)
 876                 clear_selection_except(ev);
 877
 878         _selection.erase(ev);
 879
 880         if (ev->selected())
 881                 ev->selected(false);
 882 }
 883
 884
 885 void
 886 MidiRegionView::update_drag_selection(double x1, double x2, double y1, double y2)
 887 {
 888         const double last_y = std::min(y1, y2);
 889         const double y      = std::max(y1, y2);
 890
 891         // FIXME: so, so, so much slower than this should be
 892
 893         if (x1 < x2) {
 894                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 895                         if ((*i)->x1() >= x1 && (*i)->x1() <= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 896                                 (*i)->selected(true);
 897                                 _selection.insert(*i);
 898                         } else {
 899                                 (*i)->selected(false);
 900                                 _selection.erase(*i);
 901                         }
 902                 }
 903         } else {
 904                 for (std::vector<CanvasNoteEvent*>::iterator i = _events.begin(); i != _events.end(); ++i) {
 905                         if ((*i)->x2() <= x1 && (*i)->x2() >= x2 && (*i)->y1() >= last_y && (*i)->y1() <= y) {
 906                                 (*i)->selected(true);
 907                                 _selection.insert(*i);
 908                         } else {
 909                                 (*i)->selected(false);
 910                                 _selection.erase(*i);
 911                         }
 912                 }
 913         }
 914 }
 915
 916
 917 void
 918 MidiRegionView::move_selection(double dx, double dy)
 919 {
 920         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i)
 921                 (*i)->move_event(dx, dy);
 922 }
 923
 924
 925 void
 926 MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
 927 {
 928         // TODO: This would be faster/nicer with a MoveCommand that doesn't need to copy...
 929         if (_selection.find(ev) != _selection.end()) {
 930                 uint8_t lowest_note_in_selection  = midi_stream_view()->lowest_note();
 931                 uint8_t highest_note_in_selection = midi_stream_view()->highest_note();
 932                 uint8_t highest_note_difference = 0;
 933
 934                 // find highest and lowest notes first
 935                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 936                         Selection::iterator next = i;
 937                         ++next;
 938
 939                         uint8_t pitch = (*i)->note()->note();
 940                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  pitch);
 941                         highest_note_in_selection = std::max(highest_note_in_selection, pitch);
 942
 943                         i = next;
 944                 }
 945
 946                 /*
 947                 cerr << "dnote: " << (int) dnote << endl;
 948                 cerr << "lowest note (streamview): " << int(midi_stream_view()->lowest_note())
 949                      << " highest note (streamview): " << int(midi_stream_view()->highest_note()) << endl;
 950                 cerr << "lowest note (selection): " << int(lowest_note_in_selection) << " highest note(selection): "
 951                      << int(highest_note_in_selection) << endl;
 952                 cerr << "selection size: " << _selection.size() << endl;
 953                 cerr << "Highest note in selection: " << (int) highest_note_in_selection << endl;
 954                 */
 955
 956                 // Make sure the note pitch does not exceed the MIDI standard range
 957                 if (dnote <= 127 && (highest_note_in_selection + dnote > 127)) {
 958                         highest_note_difference = highest_note_in_selection - 127;
 959                 }
 960
 961                 start_delta_command(_("move notes"));
 962
 963                 for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ) {
 964                         Selection::iterator next = i;
 965                         ++next;
 966
 967                         const boost::shared_ptr<Note> copy(new Note(*(*i)->note().get()));
 968
 969                         // we need to snap here again in nframes_t in order to be sample accurate
 970                         double new_note_time = (*i)->note()->time();
 971                         new_note_time +=  dt;
 972
 973                         // keep notes inside region if dragged beyond left region bound
 974                         if(new_note_time < _region->start()) {
 975                                 new_note_time = _region->start();
 976                         }
 977
 978                         // since note time is region-absolute but snap_to_frame expects position-relative
 979                         // time we have to coordinate transform back and forth here.
 980                         new_note_time = snap_to_frame(nframes_t(new_note_time) - _region->start()) + _region->start();
 981
 982                         copy->set_time(new_note_time);
 983
 984                         uint8_t original_pitch = (*i)->note()->note();
 985                         uint8_t new_pitch =  original_pitch + dnote - highest_note_difference;
 986
 987                         // keep notes in standard midi range
 988                         clamp_0_to_127(new_pitch);
 989
 990                         //notes which are dragged beyond the standard midi range snap back to their original place
 991                         if((original_pitch != 0 && new_pitch == 0) || (original_pitch != 127 && new_pitch == 127)) {
 992                                 new_pitch = original_pitch;
 993                         }
 994
 995                         lowest_note_in_selection  = std::min(lowest_note_in_selection,  new_pitch);
 996                         highest_note_in_selection = std::max(highest_note_in_selection, new_pitch);
 997
 998                         copy->set_note(new_pitch);
 999
1000                         command_remove_note(*i);
1001                         command_add_note(copy);
1002
1003                         _marked_for_selection.insert(copy);
1004                         i = next;
1005                 }
1006                 apply_command();
1007
1008                 // care about notes being moved beyond the upper/lower bounds on the canvas
1009                 if(lowest_note_in_selection  < midi_stream_view()->lowest_note() ||
1010                    highest_note_in_selection > midi_stream_view()->highest_note()
1011                 ) {
1012                         midi_stream_view()->set_note_range(MidiStreamView::ContentsRange);
1013         }
1014 }
1015 }
1016
1017 nframes_t
1018 MidiRegionView::snap_to_frame(double x)
1019 {
1020         PublicEditor &editor = trackview.editor;
1021         // x is region relative
1022         // convert x to global frame
1023         nframes_t frame = editor.pixel_to_frame(x) + _region->position();
1024         editor.snap_to(frame);
1025         // convert event_frame back to local coordinates relative to position
1026         frame -= _region->position();
1027         return frame;
1028 }
1029
1030 nframes_t
1031 MidiRegionView::snap_to_frame(nframes_t x)
1032 {
1033         PublicEditor &editor = trackview.editor;
1034         // x is region relative
1035         // convert x to global frame
1036         nframes_t frame = x + _region->position();
1037         editor.snap_to(frame);
1038         // convert event_frame back to local coordinates relative to position
1039         frame -= _region->position();
1040         return frame;
1041 }
1042
1043 double
1044 MidiRegionView::snap_to_pixel(double x)
1045 {
1046         return (double) trackview.editor.frame_to_pixel(snap_to_frame(x));
1047 }
1048
1049 double
1050 MidiRegionView::get_position_pixels(void)
1051 {
1052         nframes_t  region_frame  = get_position();
1053         return trackview.editor.frame_to_pixel(region_frame);
1054 }
1055
1056 void
1057 MidiRegionView::begin_resizing(CanvasNote::NoteEnd note_end)
1058 {
1059         _resize_data.clear();
1060
1061         for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
1062                 CanvasNote *note = dynamic_cast<CanvasNote *> (*i);
1063
1064                 // only insert CanvasNotes into the map
1065                 if(note) {
1066                         NoteResizeData *resize_data = new NoteResizeData();
1067                         resize_data->canvas_note = note;
1068
1069                         // create a new SimpleRect from the note which will be the resize preview
1070                         SimpleRect *resize_rect =
1071                                 new SimpleRect(
1072                                                 *group,
1073                                                 note->x1(),
1074                                                 note->y1(),
1075                                                 note->x2(),
1076                                                 note->y2());
1077
1078                         // calculate the colors: get the color settings
1079                         uint fill_color =
1080                                 UINT_RGBA_CHANGE_A(
1081                                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get(),
1082                                                 128);
1083
1084                         // make the resize preview notes more transparent and bright
1085                         fill_color = UINT_INTERPOLATE(fill_color, 0xFFFFFF40, 0.5);
1086
1087                         // calculate color based on note velocity
1088                         resize_rect->property_fill_color_rgba() =
1089                                 UINT_INTERPOLATE(
1090                                         note_fill_color(note->note()->velocity()),
1091                                         fill_color,
1092                                         0.85);
1093
1094                         resize_rect->property_outline_color_rgba() =
1095                                 ARDOUR_UI::config()->canvasvar_MidiNoteSelectedOutline.get();
1096
1097                         resize_data->resize_rect = resize_rect;
1098
1099                         if(note_end == CanvasNote::NOTE_ON) {
1100                                 resize_data->current_x = note->x1();
1101                         } else { // NOTE_OFF
1102                                 resize_data->current_x = note->x2();
1103                         }
1104
1105                         _resize_data.push_back(resize_data);
1106                 }
1107         }
1108 }
1109
1110 void
1111 MidiRegionView::update_resizing(CanvasNote::NoteEnd note_end, double x, bool relative)
1112 {
1113         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1114                 SimpleRect     *resize_rect = (*i)->resize_rect;
1115                 CanvasNote     *canvas_note = (*i)->canvas_note;
1116
1117                 const double region_start = get_position_pixels();
1118
1119                 if(relative) {
1120                         (*i)->current_x = (*i)->current_x + x;
1121                 } else {
1122                         // x is in track relative, transform it to region relative
1123                         (*i)->current_x = x - region_start;
1124                 }
1125
1126                 double current_x = (*i)->current_x;
1127
1128                 if(note_end == CanvasNote::NOTE_ON) {
1129                         resize_rect->property_x1() = snap_to_pixel(current_x);
1130                         resize_rect->property_x2() = canvas_note->x2();
1131                 } else {
1132                         resize_rect->property_x2() = snap_to_pixel(current_x);
1133                         resize_rect->property_x1() = canvas_note->x1();
1134                 }
1135         }
1136 }
1137
1138 void
1139 MidiRegionView::commit_resizing(CanvasNote::NoteEnd note_end, double event_x, bool relative)
1140 {
1141         start_delta_command(_("resize notes"));
1142
1143         for (std::vector<NoteResizeData *>::iterator i = _resize_data.begin(); i != _resize_data.end(); ++i) {
1144                 CanvasNote *canvas_note = (*i)->canvas_note;
1145                 SimpleRect *resize_rect = (*i)->resize_rect;
1146                 double      current_x   = (*i)->current_x;
1147                 const double position = get_position_pixels();
1148
1149                 if(!relative) {
1150                         // event_x is in track relative, transform it to region relative
1151                         current_x = event_x - position;
1152                 }
1153
1154                 // because snapping works on world coordinates we have to transform current_x
1155                 // to world coordinates before snapping and transform it back afterwards
1156                 nframes_t current_frame = snap_to_frame(current_x);
1157                 // transform to region start relative
1158                 current_frame += _region->start();
1159
1160                 const boost::shared_ptr<Note> copy(new Note(*(canvas_note->note().get())));
1161
1162                 // resize beginning of note
1163                 if (note_end == CanvasNote::NOTE_ON && current_frame < copy->end_time()) {
1164                         command_remove_note(canvas_note);
1165                         copy->on_event().time() = current_frame;
1166                         command_add_note(copy);
1167                         _marked_for_selection.insert(copy);
1168                 }
1169                 // resize end of note
1170                 if (note_end == CanvasNote::NOTE_OFF && current_frame > copy->time()) {
1171                         command_remove_note(canvas_note);
1172                         command_remove_note(canvas_note);
1173                         copy->off_event().time() = current_frame;
1174                         command_add_note(copy);
1175                         _marked_for_selection.insert(copy);
1176                 }
1177
1178                 delete resize_rect;
1179                 delete (*i);
1180         }
1181
1182         _resize_data.clear();
1183         apply_command();
1184 }
1185
1186
1187 void
1188 MidiRegionView::change_velocity(uint8_t velocity, bool relative)
1189 {
1190         start_delta_command(_("change velocity"));
1191         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1192                 Selection::iterator next = i;
1193                 ++next;
1194
1195                 CanvasNoteEvent *event = *i;
1196                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1197
1198                 if(relative) {
1199                         uint8_t new_velocity = copy->velocity() + velocity;
1200                         clamp_0_to_127(new_velocity);
1201
1202                         copy->set_velocity(new_velocity);
1203                 } else { // absolute
1204                         copy->set_velocity(velocity);
1205                 }
1206
1207                 command_remove_note(event);
1208                 command_add_note(copy);
1209
1210                 _marked_for_selection.insert(copy);
1211                 i = next;
1212         }
1213
1214         // dont keep notes selected if tweaking a single note
1215         if(_marked_for_selection.size() == 1) {
1216                 _marked_for_selection.clear();
1217         }
1218
1219         apply_command();
1220 }
1221
1222 void
1223 MidiRegionView::change_channel(uint8_t channel)
1224 {
1225         start_delta_command(_("change channel"));
1226         for (Selection::iterator i = _selection.begin(); i != _selection.end();) {
1227                 Selection::iterator next = i;
1228                 ++next;
1229
1230                 CanvasNoteEvent *event = *i;
1231                 const boost::shared_ptr<Note> copy(new Note(*(event->note().get())));
1232
1233                 copy->set_channel(channel);
1234
1235                 command_remove_note(event);
1236                 command_add_note(copy);
1237
1238                 _marked_for_selection.insert(copy);
1239                 i = next;
1240         }
1241
1242         // dont keep notes selected if tweaking a single note
1243         if(_marked_for_selection.size() == 1) {
1244                 _marked_for_selection.clear();
1245         }
1246
1247         apply_command();
1248 }
1249
1250
1251 void
1252 MidiRegionView::note_entered(ArdourCanvas::CanvasNoteEvent* ev)
1253 {
1254         if (ev->note() && _mouse_state == EraseTouchDragging) {
1255                 start_delta_command(_("note entered"));
1256                 ev->selected(true);
1257                 _delta_command->remove(ev->note());
1258         } else if (_mouse_state == SelectTouchDragging) {
1259                 note_selected(ev, true);
1260         }
1261 }
1262
1263
1264 void
1265 MidiRegionView::switch_source(boost::shared_ptr<Source> src)
1266 {
1267         boost::shared_ptr<MidiSource> msrc = boost::dynamic_pointer_cast<MidiSource>(src);
1268         if (msrc)
1269                 display_model(msrc->model());
1270 }
1271
1272 void
1273 MidiRegionView::set_frame_color()
1274 {
1275         if (frame) {
1276                 if (_selected && should_show_selection) {
1277                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectedFrameBase.get();
1278                 } else {
1279                         frame->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiFrameBase.get();
1280                 }
1281         }
1282 }
1283
1284 void
1285 MidiRegionView::midi_force_channel_changed(int8_t channel)
1286 {
1287         force_channel = channel;
1288 }
1289
1290 void
1291 MidiRegionView::midi_channel_selection_changed(uint16_t selection)
1292 {
1293         if(force_channel >= 0) {
1294                 selection = 0xFFFF;
1295         }
1296
1297         for(std::vector<ArdourCanvas::CanvasNoteEvent*>::iterator i = _events.begin();
1298                 i != _events.end();
1299                 ++i) {
1300                 (*i)->on_channel_selection_change(selection);
1301         }
1302         last_channel_selection = selection;
1303 }